51338902 has 4 divisors (see below), whose sum is σ = 77008356. Its totient is φ = 25669450.

The previous prime is 51338897. The next prime is 51338939. The reversal of 51338902 is 20983315.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12834724 + ... + 12834727.

It is an arithmetic number, because the mean of its divisors is an integer number (19252089).

Almost surely, 2^51338902 is an apocalyptic number.

51338902 is a deficient number, since it is larger than the sum of its proper divisors (25669454).

51338902 is a wasteful number, since it uses less digits than its factorization.

51338902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25669453.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 51338902 is about 7165.1170262599. The cubic root of 51338902 is about 371.6625982605.

The spelling of 51338902 in words is "fifty-one million, three hundred thirty-eight thousand, nine hundred two".